VELESNITSKII, V. F.; SEMENCHUK, V. N. On Finite Groups with Permutable Generalized Subnormal Subgroups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 11, p. 1555–1559, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2534. Acesso em: 7 apr. 2025.